Toshiba W808 Service Manual page 94

2-3. 3D-DNR(YCS6) Module
Troubleshooting Flow Chart
3D-DNR(YCS6) module (HU01 ) is checked with the
following procedures, and if some defects are found,
replace the module with new one.
2-3-1. Example of Operation Check Procedure
1) Preparing equipments
• W-808
• Standard color bar generator
• Aligmment tape
2) Connection procedure
Preparing
equipments
Line cable
3) Operation check procedure
( Playback ) : Turning [DNR] off. --> Playback the tape
which the color bar signals are recorded. --> Turning [DNR]
on after checking whole murky noises on the color bar.
Be sure that whole noises are reduced in this status.
Monitor
W-808
Line cable
2-3-2. Troubleshooting Flow Chart
Procedure 1.
First, check the power supply voltage and the installation
state of the 3D-DNR(YCS6) module.
Procedure 2.
Classify the defective symptoms into groups.
Check the screen on playback according to the operation
check procedure 2-3-1.
Procedure 3.
Check the defects according to the flow chart.
No.
Defective symptoms
No display appears when playing-
(1) back, or large turbulence and noises
occur.
No color appears when playing-
(2)
back, or color noises appear a lot.
Flow chart
A
B